Hi before you go off and vote cold here me out.
Yesterday I was in poundland where I seen they where selling Dog Harness for £1 these ones can be used for taking the dog for a walk or for sitting a dog in a car. These are very strong there there same material of car seat belts.
I have took my Staffordshire Bull Terrier for a few walk with it and he seems happy with it on it has also stopped him pulling me down down the street. Also there better than them poor made ones you can get for cheap on ebay as I got one and as soon as I got it on my dog he pulled it and its snapped in half witch then resulted in him running in the main road and being run over. Luckily he was ok and come away with just a few scratches.