Slivermobile

When Slivermobile enters the battlefield, put a hive token on each noncreature, nonvehicle artifact you control. Each artifact you control with a hive counter on it is a 3/3 vehicle.
Other vehicles you control have sliver crew 2.
Sliver Crew 2 (Tap any number of untapped slivers you control with combined power 2 or greater: this vehicle becomes a sliver artifact creature until end of turn.)