I'm really confused, and I'm hoping those of you who do understand how this works can clarify it.
SR4A 170 says that everyone makes a Vehicle test at the start of the turn with modifiers. Then, "The drivers with the most hits on either side are compared in an Opposed Vehicle Test."
Question 1: One of the modifiers is: "Then compare the Speed values of all vehicles on either side. Whichever side has the greater Speed value adds a +1 modifier for every 10 points (rounded down) that their Speed exceeds their opponents." Does this mean sum of all speeds on that side, highest speed, lowest speed, average of all speeds on that side, or what?
Question 2: the comparison (Opposed Vehicle Test). Is this a completely new test, rolled by the people who got the highest vehicle test on their side? Or do you use the results of the original vehicle test? If it is a new test, do the same modifiers apply?
Question 3: Under multiple vehicles, I am confused as to what is meant by the second paragraph. "Add the Speed values of all the vehicles on each "side" and compare totals. For every 20 points that the highest total Speed Rating exceeds the second highest total, apply an additional 01 dice pool modifier to all Chase Stunt Tests performed by the slower factions' vehicles." Does "slower factions' vehicles" mean all factions but the fastest, or all but the two fastest?
I also see some problems with this system not actually making any sense, but I might just be misunderstanding how the whole thing works, so I'll wait to discuss that.