Yabaa Dabba Doo!

The HumanCar, is the world's first human-powered/electric hybrid automobile. Wait, is it even really an automobile? While you don't have to Fred Flintstone it, it does have 4 sets of pedals for all passengers and both front seats have a steering wheel so you can share captaining duties. It's not even available yet, but you can pre-order your very own HumanCar with a $500 deposit. You should probably consider this mode of transport only if you have fairly physically fit friends. According to the manufacturer, you can tell immediately who's slacking off. I bet Fred wished we'd had that option in the FlintMobile.