The vehicle thing is not my problem; Torque is terrible at collisions. Cars and such go through the bedroom just as easily as slate maps (difference being, in slate maps you have more room to go faster thus hit the ground at potentially higher speeds)
As for being small, the maps are made with water (it has to be water in order for it to be seen without much of a download. I do not want to force people to download redundant .ter files). The water is exactly at the ground level in order to avoid the maps looking weird like you are floating a few inches in the air everywhere.