There might be a loophole somewhere to where they can't take your car but, they can still sue you, obtain a judgment and levy your bank account, and lien your property. So, it's really just a brief respite.
I suggest you call them. Explain your situation and tell them that you'd like to settle the account.
Try offering your principal plus a reasonable interest amount, break it into monthly payments and if they agree, get it in writing.