Here's an idea: what if we built lots of personal rapid transit vehicles, but made them operate on the ordinary cheap-to-build-and-maintain roads that already e

Here's an idea: what if we built lots of personal rapid transit vehicles, but made them operate on the ordinary cheap-to-build-and-maintain roads that already exist, and sold them outright to the end users so there was no need to maintain a massive centrally controlled network? That could be a game-changer.