http://autoracing1.com/hotnews.asp

Many of us said it wouldn't work as advertised, and that a front wheel would just climb it and/or break it off.

Both of these are low speed, or relatively low speed, street course incidents when compared to oval track speeds.

2013 IZOD Indy Car Series St. Petersburg Hildebrand Crash under caution - YouTube

[HD] Marco Andretti & Graham Rahal Crash - IndyCar Long Beach 2012 - YouTube