Ian Hay 
Knight on Wheels [PDF ebook] 

Young Philip Meldrum lives a somewhat unusual life with his Uncle Joseph, a prominent philanthropist who happens to be highly suspicious of all women and has drilled this mistrust into the mind of his teenage nephew. For the most part, Philip spends his time attending to his uncle’s correspondence and indulging his obsession with automobiles. But when he finds himself encountering a girl who doesn’t immediately provoke his disgust, Philip begins reconsidering the truth of his uncle’s teachings.