Snowmobile

The  is a controllable vehicle in Call of Duty: Modern Warfare 2  and  Call of Duty: Modern Warfare 3.

Campaign
The Snowmobile only appears in the mission "Cliffhanger". The G18 can be fired with the left hand while driving one. John "Soap" MacTavish and Gary "Roach" Sanderson use the vehicles to escape Ultranationalist infantry, snowmobiles and helicopters in the level "Cliffhanger". Snowmobiles make no other appearance in the campaign.

Special Ops
Snowmobiles appear in "Time Trial" and "Race" in the Spec Ops mode. In the Spec Ops missions "Time Trial" and "Race", the player can get a 'Quick Start!' which allows them to start slightly earlier than normal and gives the snowmobile a short burst of speed.

Call of Duty: Modern Warfare 3
The Snowmobile makes a single appearance in the campaign mission "Down the Rabbit Hole". Unlike Call of Duty: Modern Warfare 2, it is not controllable. It is only seen when the Ultranationalists in the mine's exterior, bringing in reinforcements for defense. Snowmobiles make no other appearances in the campaign.

In the Collection 1 content collection, the snowmobile appears in the Special Ops mission "Black Ice" where one player drives the snowmobile and the second player shoots from behind with Akimbo FMG9s and an ACR 6.8.

Trivia

 * GameStop gave away a custom black snowmobile (the same one used in the game) as part of their pre-order promotion for Call of Duty: Modern Warfare 2.
 * On the sides of the snowmobiles that MacTavish and the player commandeer, there is a Ukrainian Tryzub painted on the side.
 * The snowmobile only appears in "Cliffhanger" in single-player, but appears in Race and Time Trial in Special Ops. It is absent from multiplayer. The player can also see a snowmobile in the "Museum" level, though it cannot be used.
 * A non-drivable snowmobile can be seen on the multiplayer map Estate in a garage.
 * There is an Intel laptop during the course, however, it's the hardest to get because the player must drive on it, and it's difficult to see.
 * It is possible to see a moving snowmobile without a driver in the level "Cliffhanger".
 * When riding a snowmobile, the G18 fires considerably slower than it does when fired normally.
 * Driving into trees when coming down the very last hill will kill the player, even if they use cheats.