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1.
To revoke or remove one's access to their automobile.
John got caught drinking at Prom, so his dad carstrated him.
by eatchit April 01, 2009
 
2.
When you are without keys, your car is in the shop, or otherwise out of your hands for any given period of time.
"Man, my old lady's got the keys. I'm car-strated for two days!
by satanpentigram666 October 07, 2010