It started out easy and quick, but by the end the rows were taking forever and using a lot of yarn. I fibbed and said it was for an ugly afghan contest LOL. I wish I had measured against the tire a second time and stretched it out because although I knew I had increased too much in the middle, I thought it had smoothed out. In the end, it was way too big around, but actually needed more width. I chained a bunch on ties since I didn't know how I was going to tie it on. There are ties and plain yarn zig zaging everywhere.
Well, when he got home from the Toyota dealership, he was NOT happy. It wasn't until they came in to tell him that they weren't going to do his complimentary wash (really just a spray down, I think) because they didn't want to disturb the item on the back, that he took a look. They were all laughing and thought it was great, but he wasn't so amused. However, the next day, telling his parents, he was laughing a bit about it. I told him we wouldn't have gone to so much work if we didn't love him :)
I bought two 50gr balls of cheap yarn from the dollar store and the rest was from the stash. I'm not going to count the whole amount I used as "yarn out" because it's still in the basement LOL. But I will count 150gr to count for the two cheap balls and all the ends trimmed and the short ties I won't recycle. Apparently I've already counted that 100gr in :)
Yarn In: 1642gr
Yarn Out: 150gr + 1505gr= 1655gr
Balance: 13gr more bought than used
Costs: $40.73/136 days = $0.30per day