Not bad, but too repetitive
I thought the title screen was cute enough, so I think it's got some genuine appeal, but the gameplay was a bit repetitive. If there were some power-ups and obsticales then you'd start cooking with some gasoline. And there really should be a non-repetitive song that's more than five seconds; it gets annoying after a while.
It's got a cute concept, though. You should expand on WiggiWorld and throw a few friends and minor baddies that could be villains in there just for some kicks. Good luck, I think this could be pretty cool if you put some more bodywork under the hood.