Re: No car tax?
1) Have you ever, ever been unlucky? My road tax fell off my van minutes after renewing it. Camera. Instant fine.
2) An MOT is a certificate that the vehicle is roadworthy. If it ain't moving? You might as well lump it into (1) as a tax.
3) Ever had a car crushed? Sorry, it wasn't registered as insured in your name.. talk to fob off dept.
Under your new rules.. am I not allowed a party? Someone left a car on my back lawn. It wasn't taxed. No idea if it had an mot. Who's responsible? I waited a couple of weeks, applied for the reg docs then asked local plod: "fuck it, it's yours mate".
The above is an extreme example of "a parent may be in hospital". Get a grip!