I'll try the R1 concept and post another pic. Had the ole Grand Turismo layouts in mind..0I prefer the standard R1 over the squeeze, for a couple reasons. First, it's not a proper squeeze, so some cars can go through, and some can't, so rarely to people actually back off when entering just behind another car in the other lane. Second, forced interaction between cars on a digital track is entirely unnecessary. There's already plenty of car interaction from sharing the lanes and changing lanes. These kinds of tracks were made to give the "real racing" feel to analog tracks, and are just obstacles in digital racing.
As for coasting... depends on the car. ;-)