It would be very difficult to let go. I think keep it for 6-18 months depending on how many tickets I got
If I won it I would pay the tax on it, get rid of the Prius, and it would become the cross town commuter for the one who has a real job where it would sit in a doctor office parking lot all day and garage at night. Let me drive it and I'll be getting King Air Bills from CHP because their helicopters and Stationairs won't be able to keep up.
I would make the financially unsound decision of keeping it. You know the picture of the $600/mo apartment with the corvette parked in front labled "Priorities"? That'd be me. But with a Tesla.
YOLO, as long as the maintenance of the car bankrupt you I guess maintenance would still be cheaper than owning a Lamborghini or Ferrari.