If you want to stop in Memphis, TN for BBQ I suggest you go to Cozy Corner BBQ due to it's location close to I 40. Right after your cross the Mississippi River get off I 40 at Exit 1B and go N on N Danny Thomas Blvd. Go about 2 blocks and you will pass St. Jude Children's Hospital then take a right on N. Parkway. Go 2 blocks to Cozy Corner for outstanding BBQ. When you leave CC head E to N Manasas and take your left. Go a block and take a right on Jackson Ave. then go about half a mile to I 240. Go under the IS and take a left going N and get on I 240 or I40 and go N. Go about 15 miles on I 240. You will turn E and then S before you reach Exit 12C then take I 40 E 200 miles to Nashville, TN.
Cozy Corner @ 745 N. Parkway, Memphis, TN. 901 - 527 - 9158.
http://www.cozycornerbbq.com/ It's about 85 miles from Cozy Corner to Jackson, TN. It's a fine place for a road stop. Get off I 40 at Exit # 80A at Jackson, TN and get off to the right on Hwy. 186/45 then turn into Casey Jones Old Country Store on the right. This is a large complex with Casey Jone's Home and Museum and some shops. The Old Country Store serves a buffet of outstanding country food for breakfast, lunch or dinner and opens at 6:30 AM.
Old Country Store @ 56 Casey Jones Lane, Jackson, TN 731 - 668 - 1223.
http://www.caseyjones.com..CountryStore/index.html Are you going to stop in Nashville along I 40. It's about 4 hours from Memphis, TN. You may want to keep on rolling. If not I will give you a few places for lunch or dinner there, First good country food is at Exit 204 before you get to downtown Nashville on I 40. Get off and go right on Robertson Ave. then take your first left on Charlotte Ave. go past the shopping center on your left and take a left on 53rd Ave. N and Wendell Smith's is on your left open for breakfast, lunch and dinner serving good soul and country food. There's a Best Western, Days Inn, Comfort and Baymont back at Robertson where you get back on I 40 if you want to stay there. If you stay in this area you can go back to Wendell Smith's for breakfast.
Wendell Smith's @ 407 53rd Ave. North, Nashville, TN 615 - 383 - 7114.
If you pass up Wendell Smith's then you can get off I 40 at Exit
Arnold's Country Kitchen @ 605 8th Avenue South, Nashville, TN 615 - 256 - 4455.
http://www.hollyeats.com/ArnoldsCountryKitchen.htm  
Get off I 40 at Exit 238 in Lebanon, TN and go N on S Cumberland to Sunset Restaurant for good country food. Get off I 40 at Exit 258 at Gordonsville, TN and go N on Gordonsville Highway to Timberloft for good BBQ and road food for lunch or dinner. Get off I 40 at Exit 287 in
Cookeville, TN and go N on S Jefferson to Maddux Station at E Spring Street for good road food. Go to Brass Lantern in
Crossville for good road food. Dickey's has good BBQ and Halcyon is a fun dining choice.
Sunset Restaurant @ 640 South Cumberland St., Lebanon, TN 615 - 444 - 9530.
Timberloft Restaurant @ 470 Gordonsville Highway, Gordonsville, TN 615 - 683 - 5070.
http://www.timberloftrestaurant.com/ Maddux Station Restaurant & Wine Bar @ 319 East Spring St., Cookeville, TN 931 - 854 - 0883.
http://www.madduxstation.com/# Brass Lantern Restaurant and Lounge @ 79 Chestnut Hill Rd., Crossville, TN 931 - 484 - 7657.
…officelive.com/default.aspx Dickey's BBQ Pit @ 965 Northside Dr., Crossville, TN 931 - 484 - 4900.
Halcyon Days Restaurant @ 2444 Genesis Rd., Crossville, TN 931 - 456 - 3663.
Before you reach Knoxville get off I 75 at Exit 373 on the S side and hit the first street left on
Parkside and go about a mile to Smokey Mountrain Brewery for pizza, burgers and steaks. Get back on I 75 and head N on I 75/I 40 past Knoxville.
Smokey Mountain Brewery @ 11308
Parkside Dr., Knoxville, TN 865 - 288 - 5500.
http://www.coppercellar.net/smbSite.shtml The folks that own Smokey Mountain own Copper Cellar just N of SM at Exit 380 S of I 75 on
Parkside also convenient to plenty of shopping and just a minute off I 75. Both places are similar.
Copper Cellar Restaurant @ 7316 Kingston Pike, Knoxville, TN 865 - 673 - 3422.
http://www.coppercellar.net/copperSite.shtml Unless you spend the night close to Knoxville, TN I would keep rolling and get on around Knoxville, TN and head E out of the traffic. Litton's is a good family restaurant in Knoxville, TN but it's not convenient to I 40. If you took the I 640 by pass around Knoxville, TN on the N side it's pretty convenient. Get off I 640 at Exit 6 and go N on N Broadway SE to Litton's for good country family food.
Litton's Market and Restaurant @ 2803 Essary Dr., Knoxville, TN 865 - 688 - 0429.
http://www.littonburgers.com/ When you leave Knoxville, TN you may need to make a road stop.. If you want to get on past Knoxville here's a neat place 30 miles E of Knoxville with good seafood for lunch. If you don't eat you can rest and get a cold drink. Get off I 40 at Exit 417 and go S on Hwy. 92 a couple of miles to Dandridge, TN. This runs into Meeting St. Go 5/6 blocks to Dandridge Seafood Restaurant.
Dandridge Seafood Restaurant @ 310 East Meeting St., Dandridge, TN 865 - 397 - 2315.
I would rather go to Smoky's Steak and BBQ which is one street over on E. Main and before the Dandridge Seafood Restaurant. They have good burgers, salads, etc. I know you did not want BBQ but Smoky's is a very nice restaurant in an attractive location with outdoor dining on the front porch. Check this link for their menu.
Smoky's Steak and BBQ @ 149 East Main St., Dandridge, TN 865 - 397 - 2272.
http://www.smokyssteakandbbq.com/ Get off I 40 at Exit 432B in Newport, TN and go E on U. S. 25/70. Go 2.2 miles to Fox and Hound Way and turn left for good road food at Fox and Hound Supper Club. There's a nice bar with 3 TV's for the game and great burgers, fresh seafood and steaks. There's also outdoor dining.
Fox and Hound Supper Club @ 127 Fox and Hound Way, Newport, TN 423 - 623 - 9161.
Get off I 40 at Exit 440 and go 2.1 miles W on Highway 73/32/Wilton Springs Road to Highway 32/73. Take a left and go to Shirley's Family Restaurant for good road food for breakfast, lunch or dinner. If you go to your first right past Shirley's and take a right go to Creekwalk Inn at Whisperwood Farm Resort for a fine B&B for overnight and good comfort food.
Shirley's Family Restaurant @ 2765 Cosby Highway, Cosby, TN 423 - 613 - 5515.
Creekwalk Inn @ Whisperwood Farm @ 164 Midddle Creek Rd, Cosby, TN 423 - 487 - 4000.
http://whisperwoodretreat.com/ Get off I 40 at Exit 447 in Hartford, TN and go to Hartford Road. Take a left and go to Big Creek Road. Take a left and go to fine BBQ @ Pigeon River Smokehouse. Mmmmmm........
Pigeon River Smokehouse @ 3105 Big Creek Rd., Hartford, TN 423 - 487 - 0061.
http://pigeonriversmokehouse.com/