Someone mentioned that a bad guy's glitch shouldn't cause the party harm ... maybe I crossed my words there, but it was a party member that shot (and destroyed) the players bike. Why they didnt "pretend" to shoot at each other then act it out is beyond me. Heat of the moment? I dunno.
Sorry, I misinterpreted your original description.
That actually makes things much worse. If I was a runner and my own teammate was shooting at me, I'd be furious if he was trying to actually hit my (probably very expensive, treasured) bike. Like, what the hell? I'm going 150 mph!
Also for perspective,
terminal velocity of a falling human is ~120mph. I would have a better survival change jumping out of a plane without a parachute than surviving that bike crash. In the way that it was described, I would probably force the rider to burn (vs. spend) Edge to live. Splat. I hate directly harming players (see my previous post) but that's like a really ludicrous speed to expect to walk away from. I would of course explain my reasoning (I think the plane jumping scenario illustrates that well- do the players really think they should be able to dive out of a plane at 30,000 feet and live?) but it'd still be an unpleasant experience.
As a nitpicky just-for-fun tangent, I also think an attack roll against a threshold should be expected due to the speed of the vehicle. For fun I just plugged in some ballpark calculations:
If the shooter was looking at an area 100 yards across (a football field) to take the shot, a 150mph bike would cross that in just 1.36 seconds. Human reaction time averages about .25 seconds. I can't find "start of trigger pull to bullet firing" numbers that don't also include response time, so let's just say .1 seconds as a rough number for start of trigger pull to firing of the bullet.
Assuming the target is not that far away (quarter of a kilometer, or 820 feet) and an average rifle speed of 2900 ft/s (the M4's muzzle velocity), the bullet's travel time is another .28 seconds.
That means from the moment when the shooter sees the rider he has only .73 seconds to start pulling the trigger before the rider is outside of his field of view. Impossible? No, three quarters of a second is actually a fairly long time. But difficult? Yea.
(1.36 - .25 - .1 -.28 = .73)
(edit) More fun facts: if you were aiming at the dead center of the bike, you would have only .02 seconds until the bike was completely out of your sight. Even with an instant reaction rate, the bullet time alone would cause it to miss.
For that calculation I used a random Kawasaki (ninja bike) model, the 2015-KLR650 (whatever that is, I don't know motorcycles). It has a length of 90.4 inches. Then I found how long it would take it going at 150mph to travel half of its body length (halving due to center aiming).
(2nd edit, okay, I'm having way too much fun with this) In order for bullet time to be irrelevant, you would need to have a vehicle the length of 2.3 school buses (~45 feet long each). If you center aimed at that super long, 150mph bus it could not full pass out of your sight before the bullet struck it. 150mph is really, really fast.