So I redownloaded the 1.6 server and decided to stick to the test account/persona to do some testing.. and the weirdest glitch happened.
I had purchased the Drag Supra in the dealership, was tuning it up and about to take it out, when suddenly it had changed into a bodyless Plymouth Hemi Cuda.
I tried entering back into the garage to check on the car, and the game crashed.
Anytime I tried to restart the game, I'd still be in the bodyless Cuda, and the game would crash at the "Choose Driver" screen.
I.. what?
EDIT:
I found out that apparently anytime I sell a car and then try to buy and upgrade a new one is when I get the "Out of Memory" error that triggers the infinite starting car loop glitch. The problem seems to be linked to selling cars. Everything else works as expected otherwise.