Actually, only the ones doing highly illegal hotsim could've been lethally dumpshocked; which, along with BTL, is probably why it's illegal in the first place.
Noone in AR -by far the most common and popular way of working on the matrix- would suffer dumpshock. People in coldsim would suffer stun damage because of dumpshock.
But I can live with your interpretation of the rules; if anything, it's a lot safer for Wagner; if at this moment, by my view of the rules, someone activated a R6+ jammer on him, he'd suffer dumpshock 5 times, so your interpretation is a lot safer

-- No need to further discuss this here. But if you don't mind, I am going to start a thread on the rules forum for this though; I get the idea that this won't be the only game I'll be running into this. Whatever gets called there has no impact here. Like I said, your rule is a lot safer for my hacker/rigger

For the record: Yes, I do think Terminate Connection would give dumpshock. I'm under the belief that Log Out is the only way to get out without dumpshock. Anything else than "gracefully disconnecting" is simply too taxing for the (meta)human brain to deal with. "You always retreat back safely to the persona in your own PAN": without Log Off, I don't think so, otherwise being in a crashed node or destroyed drone wouldn't result in dumpshock neither.
2nd post: Cool.
Also: It's a Toyota Coaster, not a Rover! :p
Also (but this might be a typo on your part): if Driver and Zach are both at Long range from Wagner, and Driver won/wins a vehicle test, Driver can improve to Medium range; not Short. One step at a time, no? Yep, typo, done right in IC.
IC post: You sure this is a three way chase? The way I count, there's only two opposing sides, one just has two vehicles. Three way chase would be if KE joins in on the fun too, then there'd be 3 opposing sides.
Quote: "For instance should a Lone Star
helicopter be following a shadowrunning team trying to evade a corp
sec unit would constitute three sides and apply a –2 dice pool modifier
to everyone’s tests."