I'm entering the cabriolet into the Lake Mirror Auto Festival and each car gets a pretty nice placard to display with it. I just whipped this up

"This imperial red E320 Cabriolet was a special gift by a pair of stranded motorists to Joe Gravelle. Joe went out of his way to assist the previous owners repair the car and get them on their way.
Given to him with 82,000 original miles it has now passed the 100k mark and is going strong.Powered by the Mercedes M104 straight six 3.2 liter, this Canadian spec cabriolet will give many pleasurable miles. "


I need to edit it for punctuation and grammar. It needs to stay between 50-75 words as well.

what do you think?