Hahahahahaha Lotus testing only? Proton OWNS Lotus. Whatever Proton wants, Lotus must do. That involves developing the suspension for the Proton cars.

And dude, who did you think helped Proton develop the Campro engine?

Let me give you a hint, L_TUS.

Unless, you still think Campro was developed by Renault.

http://en.wikipedia.org/wiki/Lotus_Cars#Pr...tus_Engineering

Lotus Engineering has developed engines for multiple car manufacturers. As for why their cars use Toyota engines, I think others are more knowledgeable than me.