Bessie, the Doctor's Roadster
The evasion clause is the whole design conceit: a Vehicle that doesn't just carry a pilot into combat but clears a lane for a legend anywhere on your board. That splits the card's function from most Vehicles, which are self-contained beaters that reward a crew tax with a body. Here the 3/4 frame is almost incidental to the attack trigger; the point is turning a stalled legendary attacker into an unblockable one, and the pool of eligible targets is every legend in a format that trades heavily in them. Crew 2 is cheap enough that a single mid-sized creature or a pair of small ones flips it on, and haste means the redirect is live the turn it lands. The interaction that matters is the timing: because the unblockable clause fires on Bessie's own attack, both attackers commit together, so an opponent choosing blocks has to account for a legend that can no longer be stopped and a Vehicle swinging beside it. That makes it a repeatable enabler rather than a one-shot trick, and it slots naturally into any board built around a single big legendary threat that keeps running into chump blockers. The name and framing lean hard on a specific piece of licensed fiction, but under the hood this is a two-mana evasion engine wearing a Vehicle's chassis.
