i have that book
it's awesome! i can do some more research a little later, but its kinda late so i wont do it now. the car on the cover is the "clinic model." i'll look up some more about the clinic model tomorrow, i'm getting tired. silvers2000 got it right about it being a prototype. McLaren made 5 prototypes, XP1, XP2, etc... i'm pretty sure that the clinic model is not considered one of those, but if it is it's probably XP5. the only difference between those cars are the bottom one is a production car while the top is a prototype. that was the very first car that they unveiled to the public. all of the production cars were fairly similar. i saw a pic in the book with a guy who just got one and the mirrors were up high. but i'll look it up some more later.