Although Aylesworth begins by recognizing that our machines perform below capacity because of traffic jams, overcrowding and poor planning, there's an implicit assumption here that new technology alone can solve our transportation problems. Just the same, the technological specifics are scanty. The progress reviews on hovercraft and hydrofoils are the most up to date we've seen. But Stambler has far more to say about the cars of the future (see Automobile Engines of Today and Tomorrow, 1972, for example), and the chapters on SSTs and high speed trains are sketchy, even if the former does focus on the economic question of speed vs. high cost. Since so much of the 96 page text merely recaps news stories, price will be a factor here too.