What was the name of this cartoon?

I remember when i was a kid watching this cartoon. it wasnt really a series but more like a mini-series. the main charachter was this kid who was half human and half alien, and he had this nifty motorcycle that could hover and fly and do all other sorts of things. i remember it being his dad who was an alien who had crashed on earth and fell in love with his mother, and that now other, nastier aliens had come looking for his dad, and he went off to do the whole save the world thing. if anyone could tell me the name of that show, it would be a great help. thanks.