Sounds spartan tbh - Leeds gets cold in January.
Where are you going to park it, many car parks ban 'overnight camping' and residential areas might get a bit intolerant of you living there.
If people work out you've got a laptop and telly in there it's quite likely to get robbed.
Any sort of mechanical problems and you could end up without a home and a means of transport in one blow.
Showers and toilets don't work by magic - you'll have to empty a sewage tank out somewhere.
No postal address to use for job applications
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otoh if you pull it off you could write a book about your experience or at least sell your story to the daily mail.