In this artist rendering released by Toyota Motor Corp. ahead of Tokyo Motor Show, which opens to public in Chiba, east of Tokyo, on Oct. 27, 2007, a toylike “concept” car called Rin is shown. The green-and-beige model has a transparent floor, huge windows and doors that slide open like Japanese “shoji” screens so its interior appears to blend with its surroundings for what Toyota called a soothing ride.