This might be another weird pairing for a post! But that's fine, they're both Hot Wheels either way! Anyways, it's the Twin Mill III in green and the Retro-Active in white. I didn't even know there was a Twin Mill III up until recently, but I think I like it better than the original. The Retro-Active looks pretty cool, I like that battery in the back!
Left to right: Twin Mill III, Twin Mill, Super Treasure Hunt Twin Mill