"Driving Lessons," a sort of "Harold and Maude" without the sex, pairs him with Julie Walters in the role of a soulful but buttoned-down adolescent who meets his match in a grotesquely eccentric retired actress. Aiming for wacky and heartwarming, the film is, at its sporadic best, a mildly diverting coming-of-age story. U.S. audiences partial to this kind of quirky but conventional British export and those curious to see Grint playing someone other than Ron Weasley will take a look.

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