Apols didn't notice that the car is not fixable but you still need to be a responsible car owner while you still have it or you could end up with a lot of trouble. This is quite a complicated area. IFAIR, you can park a car on a public road if it's not roadworthy, say after being damaged in an accident, so long as it is not unsafe while it is stationary, but it must be taxed and to be taxed it must have a valid MOT certificate in force and of course if it wouldn't then be driveable to the MOT testing station nor would it pass its MOT then at that point it wouldn't be taxable so it couldn't stay there. You mustn't drive an unroadworthy car on a public road even if it does have an MOT certificate in force although what constitutes unroadworthy, and whether you can drive it to a(nother) garage is a bit complicated.
If it's permanently off road for the time being it has to be declared as SORN to the DVLA instead. You need to inform your insurer of the facts in order for your insurance to be valid.
Have a look at Honest John on this type of topic (www.honestjohn.co.uk), and www.gov.uk/check-vehicle-safe
And start here for info on roadworthiness, MOTs etc.
www.gov.uk/check-vehicle-safe
No idea what the law is about sleeping in a car parked on a public road. People do it in emergencies such as accident and snow tailbacks and when leaving a home for their own safety or locked out, but doing it day after day isn't the same thing as doing it for a temporary unplanned reason.
OP you'll need to factor in walking to work or bus or train when looking for this housing for the job, or buying a new roadworthy if cheap car, so this is getting more logistically challenging. And how will you get to work if a new car breaks down. You may manage to get more for your car for scrap than you realise, I got about £300 for a car that was not economical to fix but the rest of it was in good condition. If I could have been bothered with more faff I could have probably got more.