Horror as out-of-control demolition derby truck crashes through safety barriers and begins speeding down busy highway

A truck-driving stuntman was airlifted to a infirmary aft he collapsed into a camper and ended up barreling down a adjacent road in Iowa. 

On Sunday, fans gathered astatine nan Jackson County Fair's Trailer Race astatine nan Maquoketa Speedway to watch nan driver execute nan planned stunt. 

Footage from nan title shows the daredevil going complete a mini ramp and done nan camper arsenic viewers shouted on. 

Officials later revealed that nan high-speed clang caused the risk-taker to autumn unconscious and suffer power of nan wheel. 

Without immoderate supervision, nan motortruck ended up going disconnected nan track, speedily down Highway 62 and striking a shed earlier coming to a halt. 

Officials quickly took nan unfortunate to a location infirmary successful Iowa City to beryllium treated for their injuries. 

The shed proprietor later told TV6 that he was watching TV erstwhile he abruptly heard a large sound and rushed extracurricular to find his hut destroyed. 

He noted that it was nan shed that prevented nan motortruck from crashing further into his location and it stopped nan conveyance from hitting state statement pipes. 

Witness Janie Fitzpatrick later recalled really 'nerve wracking' watching nan incident was.   

She told TV6: 'I conscionable saw immoderate benignant of flash crossed nan road. It was conscionable truthful accelerated you really couldn't make retired what it was. I glanced to nan near and noticed nan obstruction had been taken out, to nan correct of maine he collapsed into nan shed.

'It was conscionable nervus wracking, decidedly puts a scare into you. 

 'And it's conscionable for illustration nan matter of 30 seconds, maine stopping astatine a stoplight. That 30 seconds could person ended our lives, you know, truthful close.'

Officials person not yet clarified nan grade of nan victim's injuries, and their sanction is being withheld arsenic an investigation continues. 

The incident comes weeks aft 3 group died arsenic an alleged drunk driver plowed into a crowd of astatine slightest 10 successful New York City.

The clang occurred successful nan midst of nan city's Fourth of July celebrations, and among those deed were a mom and 3 kids, cops said.

It remains unclear if nan 3 were among nan fatalities, arsenic astatine slightest 7 others were injured by nan bad boy pickup.

It crashed around 9pm successful nan Lower East Side, astir 20 minutes earlier fireworks were launched from barges connected nan Hudson River.

Cops said nan much than two-ton Ford F-150 blew past a extremity motion and that nan car's driver was recovered to person alcohol on his activity pursuing nan fatal smash. He was taken into custody.