Hiyanide.

[DonTony]

Although they're all personal methods of transportation, a motorcycle, an ATV and a snowmobile have very distinct functions. If you want to head out on the highway, you'll probably hop on your motorcycle. Motorcycles aren't meant to go off-road, however, so if you want to navigate dirt trails, an ATV or a dirt bike is a good choice. And as its name implies, a snowmobile is perfectly suited to snowy, icy roads and trails. Many people own at least one of these vehicles, but most don't have one of each. Wouldn't it be great if one vehicle could handle all of these separate road conditions without even having to change tires? Enter the Hyanide, a concept vehicle designed to do just that.

[stinkwheel]

Nah, you just need one of these and stick the front wheel back in when the snow has melted.

[Didge]

.............or one of these:-

https://i13.tinypic.com/2u6pbo1.jpg

........or this:-

https://i13.tinypic.com/2gww5lk.jpg