Are you backlinking them at all?
I looked at the following hub:
What I think you need to do is break those capsules up. If those are are individual picture capsules instead of just one big one - then you need to title the capsules with the name of the cars.
If it's one big capsule....then I'd definitely change that to each picture being it's own unique capsule.
I also think that you could really benefit from submitting one of your hubs to the "Extreme Hub Makeover" forum - so that you can learn some on page SEO basics.
I had the exact same thing told to me a long time ago - and I've benefited more from being asked to submit one of my hubs there than I could ever get around to telling you.