Please discuss here all your remarks and pose your questions about all racing series, except Formula One. Both technical and other questions about GP2, Touring cars, IRL, LMS, ...
Rudy that last video is a good example of why many series have banned the use of that style of guard rail. Cars, especially low open wheel cars can submarine under them and decapitate the driver.
To achieve anything, you must be prepared to dabble on the boundary of disaster.”
Sir Stirling Moss