Um dude even cars from the 80s have rev limiters, pretty much having a PCM= rev limiterUh, newer OBD2 computer-controlled cars do, yes. But if you take your old 1982 Mazda GLC station wagon out back and floor it, it will continue to rev until you break a valve spring or a rod lets go.
Plus said car prolly runs out steam right around the redline so if he manages to get it in 2nd or 3rd he prolly wont be able to do much damage.
Um what makes you think a gearbox will grenade at 6000-7000~ rpms where most cars have the rev limiters?Gearboxes don't. Your engine might not explode if you drive on the rev limiter in first gear, but I bet your gearbox strips in the first hour of your police chase.
I'm pretty sure it's only an issue once you get above 8000 rpms and that's pretty much limited to automatics.
For example, a 90s tbird will start having problems above 5500~rpm because of the shitty torque convertor on it.