On the other hand there's also the option of Called Shot - Tire
if you hit a tire the driver takes -2 penalty on his vehicle tests.I'd have to hit with -6 total modifier.Not a bad option but not the best, since the driver has no cover bonus on the bike.After all If I inflict damage upon him he will probably suffer a penalty on all tests
We don't need to overcomplicate things.We re fine at the moment, lets see how this goes.
Spirits would need 2 complex actions(jump out, summon), until then our vehicle could have been destroyed, since there were 2 riders until IT managed to make on of them lose us