So it's a subframe repair product? If the stuff is as amazing as you claim, why didn't it just COME filled from the factory the first time? This incredible amazing magical foam has been around since the Q45, surely BMW engineers have heard of it before they designed the E46?

And while we're on the topic, why aren't Ferrari's filled with it? Lamborghini's? Porsche's? Nope. If there was a simple foam that increased rigidity as much as you claim and only added 8 lbs to the overall vehicle, don't you think performance car chassis designers would be all over it!

But instead, let's look at what does come with this miracle foam installed? Infiniti Q45's! The pinnacle of automotive chassis design excellence? Uhh, no. The sloppiest, loosest chassis designed to pamper it's riders with a luxurious, quiet ride. IMO this foam is best used as a noise suppression. Hence it's application in a luxury sedan!

You can argue all you want. If the stuff was as good as you make it out to be, it would be much more widespread in it's application.