Salvation Engine

Other artifact creatures you control get +2/+2.
Whenever this Vehicle attacks, return up to one target artifact card from your graveyard to the battlefield.
Crew 6

Cloudspire Captain

Mounts and Vehicles you control get +1/+1.
This creature saddles Mounts and crews Vehicles as though its power were 2 greater.

Hulldrifter

Flying
When this Vehicle enters, draw two cards.
Crew 3 (Tap any number of creatures you control with total power 3 or more: This Vehicle becomes an artifact creature until end of turn.)

Mu Yanling, Wind Rider

When this creature enters, create a 3/2 colorless Vehicle artifact token with crew 1.
Vehicles you control have flying.
Whenever one or more creatures you control with flying deal combat damage to a player, draw a card.

Miles "Tails" Prower

Flash
Flying
Whenever a Vehicle you control enters, draw a card if it has flying. Otherwise, put a flying counter on it.

Midnight Mangler

During turns other than yours, this Vehicle is an artifact creature.
Crew 2 (Tap any number of creatures you control with total power 2 or more: This Vehicle becomes an artifact creature until end of turn.)