The ULTra PRT launch at Heathrow has been delayed at least 3 times. The new launch date of the glorified golf carts of Heathrow is some time next month.
The so-called Morgantown PRT (it's a mundane people-mover) was the subject of a student newspaper editorial after a malfunction created a "fireball" and filled a vehicle with smoke. The cost of fixing the Morgantown boondoggle is $93 million.