Not only is Dan going to do it he plans to carry the fuel supply in the Hot Dog Cart he will tow behind it while scratching his butt and singing "Bridge over troubled waters". Happy New Yeaar Waalter F.Fo'sho'! Do you know what happens to a bicycle tire at 60 mph, much less 120? How about a wheel? Have you considered the forces put on a bicycle frame if you hit the slightest bump at 120 mph?
Also, Did you do your homework and find that a pulse jet large enough to propel a bicycle and rider to 120 is nearly impossible to mount to a bicycle- and what about the huge fuel supply needed?
If anyone is going 120 with a pulsejet on a bicycle, don't you think they would provide some evidence?