When asked about the top speed he saw in his car , he commented that he verified 90 mph once , but the thrill of the moment did not encourage repeating the feat .
Jaguar 's inimitable test engineer Norman Dewis used a Mark V regularly .
When asked about the top speed Norman Dewis saw in Norman Dewis ' car , Norman Dewis commented that he verified 90 mph once , but the thrill of the moment did not encourage repeating the feat .
Jaguar 's inimitable test engineer Norman Dewis used a Mark V regularly .