Tokyo diary: the heat is truly on – and a basketball-playing robot holds court

Toyota's giant AI robot is halftime's hottest attraction ... and the weather gods are having a ball

Spectators aren't the only thing missing from these Games. Much of the next-generation technology due to be showcased here is too. Toyota had planned to use driverless cars at the Games and had made robots for the new Olympic stadium that, among other things, could take, then bring, food and drinks orders to spectators using wheelchairs.