Gods, no. It sounds terrifying :eek:
In fact I can't imagine even being able to fit in there. :eek:
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I did it once, just to see what it felt like... it was NOT in a race and it was on a very straight stretch of road with new paving and no cross streets (and no traffic!), so I never felt particularly endangered. It does feel pretty unstable to be down like that. I wouldn't want to do it anywhere even slightly sketchy.