Soldato
I'm guessing that getting HD cameras small enough to be used on F1 cars without any increase of volume or mass on the current ones is going to take longer, and cost more, than the trackside cameras because of the complexity of reducing an HD camera to fit on an F1 car. Plus the F1 weekend uses so many frequencies that finding a frequency that isn't going to get interrupted plus the increased bandwidth required makes the onboard cameras so much harder to get up to HD. Trackside cameras are surely wired to the broadcasting centre at each track?Even just having HD content from the track cameras and standard for the onboard ones to begin with would be good.