Not as simple of an answer as some have replied.
A tow dolly can be a better option for some. Of course if the car is not flat towable, then it's an easy answer to dolly tow...but there is also the question of mods required to connect the tow bar and brakes.
The front of new cars are made as crumple zones. And the mounting of the tow bar can require a major amount of cutting bumper an/or facia panels of the car.
Then there is the question of brakes. Which ever way to tow is selected, please get brakes for the car. Brakes on the car are not always required by law, but are smart and safer. Dolly brakes are integral and easy to operate. Flat tow brakes are not so simple and have a price to match.
Finally, a flat towed car will accrue miles on the lower driveline of the car. Even if not recorded on the car's odometer, the miles are there and will impact the car in maint and/or resale value.
We dolly tow our car. We own the entire set-up to flat tow, but use a dolly for the reasons above and because we discovered that flat towing the car will cause damage over time. The car is safe and happy, riding up high away from rock strikes and loading/unloading is no harder than for a flat tow. Plus the dolly has been used to rescue some stranded friends/family in the past, and was even useful as a cargo carrier one time. We can change cars without any equipment changes and have never had an issue with a place to put the dolly, because it can easily fit under the RV's rear overhang. We have a lightweight hitch on the car for the very rare situation where the dolly had to be moved more than a few feet by hand and it doubles as a mount for a bike/cargo rack.
Best luck on your decision.