Christine, am so sorry - I didnt realise Snuggs had had an accident when I saw your other post, and was asking about pictures. Poor little guy.
Am very pleased to hear that he's at least eliminating on his own, and hope that he will begin to use the tray regularly. I agree, I wouldnt let him out alone for a while, as he'll still be feeling traumatised after the accident. Our neighbour's cat was hit by a car last month, and his tail and pelvis were fractured.
His bladder was affected in the accident too. Thankfully, he's now making a very good recovery - much better than any of us expected he would but he's still quite timid when he's out and about, and he's nervous of traffic. The walking jacket Gill got for Lupin works well, and of course you can see he looks very splendid wearing it. Am hoping Snuggs will take to one too.
Sending big hugs for you both - gentle ones for Snuggs of course.