I agree with Catlin and emc_deux. Maybe you're talking about the tutorial I wrote (on my website
Pixels or Atoms ?).
If this is the case, you should know that I always set up my blueprint this way, and I'm modeling the way emc_deux described.
It may not be the best available, but I'm get used to and I work easily now.
About the blueprint not matching one view with another, it's yet another reason not to rely only on blueprint for modeling. Just put rough shape of the car and then forget blueprint and work only with refpics.
Keep working !