My guess is that the MPG was so terrible that they had to make it a light truck to pass fleet MPG standards.
My parents drive a 2001 PT Cruiser with the stick and the gearing is so short that by the time you hit about 45 MPH, you're wishing you had a 6th gear. On the highway, my dad will often put in the clutch to up-shift but it's already in 5th.
Theirs has an overheating problem or else I'd suggest the common 'add a grill block' idea.
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