If undercar ground effects are the solution to cars not being able to follow closely, why were they banned originally?
Bruce Merchant, via Twitter
Bruce, ground effect cars of the past were getting a bit out of control. The complete underbody was an inverted wing and with sliding skirts the cars were producing huge amounts of downforce for their day.
The problem was that any sort of track or kerb damage meant that the sliding skirt system would get stuck in position. This would lead to around a 50 per cent loss of downforce and usually a huge crash as the driver would know nothing about the damage until he reached the next corner.