These guys' boss said the winner of the race would get a $50 giftcard.
 

Wearing a helmet or not at this speed (77 mph) won't change a lot I guess if they fall...

By the way, one of them is Evandro Portela, a professional cyclist who was won several titles in the past.

Answer: 80!

Cat couldn't' care less...

Logan Paul's back with more insane Vines..

Also:

College dude's funny and crazy Vine videos - part 1

A funny collection of Vines by Jordan Burt

Zach King's 'magic' Vines compiled in one video

American rock climber Alex Honnold attempts the first free solo ascent of El Sendero Luminoso, a 1,500 foot (457m) big wall near Monterrey, Mexico. Of course, he's climbing this one without safety gear!

A Subaru towing a sled speeds up to 155km/h (96 mph) on Russian snowy roads

A good load of short, funny and crazy entertaining videos

Also:

Zach King's "Magic" Vines Compiled in One Video

Best Vines of Last Week

I hope for them he doesn't play and chase like your average cat...

27 crazy Vines for your entertainment

This match opposing Jean-Michel Saive to Chuang Chih-Yuan starts like any normal professional table tennis match but quickly turns into pure craziness!

A bit long, but totally worth your time