I remember seeing the Hot Wheels Top 40 Set at Toys “R” Us way back when, but I wasn’t willing to pay the full retail price for 40 cars when all I really wanted was the ’68 Nova. Now it looks like the sets are going for around $100 online. I found this loose version on eBay for quite a bit less. I think the redlines look especially sharp against the silver, gray and black paint and trim.
Here’s a link to my Hot Wheels ’68 Nova page.