The industry will change/disappear overnight. Trucking will be 4x cheaper with 2x the transportation capacity when you remove the trucker. Doesn't matter how much unionized, etc. the industry is now. No group survives that.
I'm not sure the driver is the most expensive part...
A self driving truck can pretty much drive 24/7 but the driver has to rest more than half the day.
Truck drivers are allowed to work 70h per week.
Is that not typically the case?
Vehicle-based
Fuel & Oil Costs $0.590
Truck/Trailer Lease or Purchase Payments $0.189
Repair & Maintenance $0.152
Truck Insurance Premiums $0.067
Permits and Licenses $0.038
Tires $0.042
Tolls $0.017
Driver-based
Driver Wages $0.460
Driver Benefits $0.151
TOTAL $1.706
So driver ~ 36%