6 to 8 weeks for fracture to fix and the same to rehab, post cast remove, this can be shortened by following Dr guidance and abstaining from alcohol and smoking, but truth it's just time.
Car is best option in my opinion, as you won't get insurance on bike or the car, but you won't have to learn to ride a small wheeled scooter in slippery conditions, the probability of accident on a bike/scooter while your learning to ride it one handles is greater then a car that you know, (200bhp or 2000 it has a volume control) You pay your money and take your chance.
Car and don't get stopped or have an accident (cause one). It may cost more but you will live to fight another day and recoup your losses over time.