Has anyone else noticed that when we get an on-board shot of a Toyota, it never seems to be struggling for traction even when every other car is bouncing off the rev limiter and scrabbling to try and get some purchase on the track?
Take the start in Spa - if La Source was any further away from the starting grid, Trulli would have been in the lead. He was so much faster than the cars around him. Glock didn't exactly struggle to get it off the line either. And at Monza - the TV switches to an on-board of one of the Toyotas, James Allen says 'listen to this car without TC'....and the car accelerates out of Ascari with barely a hint of wheelspin compared to the rest of the field.
They may not be using traction control as such, as they aren't getting the misfiring soundtrack whenever they apply the power. But they seem to be doing something, IMO.