RSVP NOW – it’s required. Tweet along with Toy Insider on Friday, June 3 from 11 a.m.-12 p.m. ET for a chance to win a 12-inch Hot Wheels bike from Dynacraft! FOUR lucky winners will win a 12-inch Hot Wheels bike from Dynacraft! Additionally, ONE grand prize winner will win an even BIGGER bike — their choice of either the 16-inch Hot Wheels bike or the 16-inch Barbie bike. This contest is open to U.S. residents only!