I was in a small crowd standing around top fueller being tuned for the next race. The apprentice sat in the cockpit but he accidentally nudged the accelerator f

I was in a small crowd standing around top fueller being tuned for the next race. The apprentice sat in the cockpit but he accidentally nudged the accelerator for a fraction of a sec. The whole crowd was pushed back as a wave. It was stunningly loud. I spoke with the engineer later: idle to 8000 and back in less than a sec.