One year
It could seize up next time you drive it. Don't take chances, replace faulty wheel bearings immediately.
I'm a breeder so it depends. Is he/she sick or injured? If so leave it out. If not a wheel MUST always be in their cage
If you have a steering lock, that can lock your steering wheel in place, until you use the key in the ignition to unlock it.
Not knowing how bad the bearing is, I can't say how long it will last before the wheel falls off. Drive to your local garage for repair and don't take the highway.
The last short wheel base was the 2007 model year.
Bearings on Inifinitis should be replaced after every 30,000 km. If not, they can start grinding with or without noise. If you drive in this fashion for a while, you risk losing a wheel.
I have a transit 190 and weighed 1950 kgs over weighbridge last week
wheel
I would use it until it begins to show even minimal wear then replace the cable and or the wheel.
Burning wheel
It already is.