Yeah, I like to be president in WV for that reason and, from my experience, it would be way easier if I simply spent 15 minutes on a NRG or an Infernus (something nobody has ever suggested to disallow). I only survived once using this tactic, but I like it because there's more struggle and action. Terrorists almost always make their way inside: you press G next to the car and wait, you throw a nade when someone gets in the car to keep it active, you ram the car with another one (I can confirm this works for Turismos) or simply a (not very brilliant) security or cop will move the car.
If there are reasons to remove this, there are twice as many reasons to remove less risky tactics such as NRGs or mountain bikes.