18 Feb 2022
That ability doesn't count as "crewing" a Vehicle for any ability that would trigger off of a Vehicle becoming crewed.
18 Feb 2022
Mobilizer Mech's second ability triggers whenever its crew ability resolves, even if it is already a creature at that time.
18 Feb 2022
If an effect that causes a Vehicle to become a creature doesn't specify its power and toughness, it has the same power and toughness that it would normally have if it were crewed.