Looking through Martin's
MPG talk, I am starting to wonder about EP4 vs EP6.
On page 56 it says "EP4 Completed" and shows a blue roadster, yet I thought EP4 was orange.
Also, on page 63 it says "EP4 & EP5" durability testing and shows a Yellow and Blue Roadster. (EP5 is the yellow one, so again they are saying that EP4 is blue)
Perhaps both EP4 and EP6 are dark blue, and the orange one is a different EP?