..... Because where would the sense of a "lane change line" (= purchase basic f. This set) be? Exactly that 1x per round the track needs to be changed to compensate for any distance-related benefits. I've always wondered why there are these things only in the double pact, because that this effect raises even again. Actually, you could have it: By only one lane change is precisely the two circuits are merged forcibly - Driving with 2 cars ergo impossible. So help but only a digital set.