What happens if a driveshaft fails while driving?

My work wants me to drive a Ford Transit that was supposed to have been recalled in 2017 for 5 hours down a highway that is at a high altitude and has no guard rails to the nearest Ford dealership.

Apparently the issue with my vehicle is to do with a a rubber composite 'doughnut' that is between the end of the prop shaft and the rear differential which absorbs vibration and shock from the prop shaft.

If this component failed while I was driving what could happen?

Added (1). The suspect part is a flexible coupling or 'flex disc'

Will the rental car company make me pay for less than minimal damage to my rental vehicle?

I'm renting a 2019 Ford Flex and another car rolled into the back of my rental in a McDonald s drive through. The police inspected the car and said it's less than minimal damage. Me and the person who rolled into the back of my vehicle both have the same insurance company. Will the insurance company make the other person pay? There's 2 small scratches and a tiny cut to rear of the ford flex.

Do 164 tooth flex plates interchange between 1977 351 Windsor and 400 Ford engines?

I know the bolt patterns are the same and balance weghts changed on the 302 in 1981 to 50 oz from the 28.2 and that both Windsor and Clevelands used the 28.2 oz. What I want to know is are the dimensions the same from the flange surface of the crankshaft mount to the bolt mount for the torque converter and is the balance weight located in the same place on the flex plate relative to the bolt pattern.

Why has the US always been a conservative country with regard to immigration & flexibility of who they let in via employment?

Namely only the global elite.

This will hopefully be a thought provoking question here, as I'm not a US Citizen, but dual Dutch and British with hence a different world view and also a very strong supporter of the EU.

NAFTA never wanted to go down the same road as the EU, where a German can legally live, work and take any job in France, and an Italian can legally live, work and take any job in Belgium.Why?

Similarly, apart from Camp America for three months and unlike the two year working holiday visa in Australia, the US also also never adopted a similar scheme for Europeans to come over, take a secession of bar or Starbucks Coffee jobs and generally backpack and travel round on the Amtrak and Greyhound over two years to see all 50 states. Why? I see no harm in such a cultural experience, and for most Europeans its only 90 days at a time on the visa waiver.

Finally, what happens if Nisha, a Receptionist in the UK with Ford, would like to experience the same role working at global HQ in Detroit? She can't and is locked out from having that experience, when the company could just do an international job share swap and send someone over from the US instead, who also wants to see the UK to fill her role so 'no local is done out of a job' so to speak.

We're meant to be living in a highly globalised & fully integrated world economy, so why the continuing restrictions, tightness & lack of flexibility over the free flow movement of labour between US & Europe, both 1st world?