There are basically 3 lists of cars that can be flat towed.
1: Cars that can be towed without drive train modifications of special instructions, Just install a tow bar, lights and brakes and tow.. IN NEUTRAL.
This list includes most JEEP 4WD's with MANUAL transfer case and most stick shift cars (But not all in either case).
2: You can tow them but there is a procedure you have to run through every time you hook up or stop while towing, Start engind, run through gears, that kind of thing. Sorry I do not have an example
3: Those that can be towed with modification.
3A: LP-1 Lube Pump kit from Remco Towing .. I have a 2001 Dodge Neon with an LP1, so far no problems.
3B: Axle lock or drive shaft disconnect.
These devices turn your car or light truck into a TRUE TRAILER, I mean no power to the wheels.. IF I had a choice that is what I'd use for assorted reasons (But Jeeps are my first choice,, WHY,, I WANT A JEEP, that's why, has nothing to do with towing, I just WANT A JEEP! Had one too, for four days)
The axle lock goes on 1/2 of the axle on a FWD (Replaces the half axle) it consists of a half axle with a collar you twist the collar (An oil fliter wrench is supplied to assist) about 1/3 turn and it "Unlocks" the half axle so that wheel turns freely, the other wheel will turn the side gears only in the differential so it is essentially freewheeling as well, I towed a 1992 Chevy Lumina APV with one of those, Very nice.. Plus if some thief hopps in the towed, knowing you have to leave the key in the igintion, he's going no where without power to the wheels.
The lock technology is tried and proven and older than I am (I'm in 60s) with a failure rate of .. Well, treat it right and your newborn baby won't live that long.
The drive shaft disconnect works on the drive shaft on a RWD, effectively the same way... IT is a "Spline Clutch" I have heard of issues with these. But fairly rare. with this ALL the differential gears are in use so there is just a bit more drag.
Suggestion: When you find a car you like go to the Remco Towing site and check it out.
http://www.remcoindustries.com/Towing/Store.php