QUOTE (Mardrax @ Sep 11 2011, 10:10 PM)
Since a vehicle doesn't have Strength, it can't escape.
The vehicle rolls STR+BOD. The vehicle does have BOD. There is no rule saying that if you do not have one of the Attributes in an Attribute-only test, you may bot roll. So the vehicle gets to roll BOD.
Oh and the Engulfer rolls MAG+BOD. So in case of an Earth Spirit that is 2*Force+4
@Canray: According to the description of the Power, the Engulfer needn't be of a certain size. It can also use "the terrain it controls", whatever that means. Additionally spirit size is pretty arbitrary (cf. Street Magic p. 96-97 "Spirit appearance" Sidebar) and there is nor rule that it is proportional to Force or BOD.