ROANOKE - People packed the streets of downtown Roanoke for the 13th annual Star City Motor Madness.
Spectators watched teenagers dismantle and put together an engine in less than 20 minutes.
Organizers say the event gets bigger every year and this year more than 400 cars were in the Star City.
Impersonators were on hand to entertain the crowds.
"So much fun there were so many beautiful cars the weather was great we're in downtown roanoke what else can you ask for," Michelle Dillow, a spectator said.
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The money from this year's event goes to the "Virginia Museum of Transportation."
Last year the event raised $30,000 .