These were suggested for Chicago by staff at the Chicago Reader. Vote here to make them a reality!
"The idea is to make use of the space between regular-size cars and bridges, thus saving construction costs as well as minimizing congestion impact by allowing cars to drive underneath these jumbo buses. Fancy hitching a ride? You better start planning your move to Beijing's Mentougou district, which is where Huashi will commence building its first 186km of track at year's end."