I don't see why everyone thinks bonnys are that heavy. You're bonny weighs 3580lbs. respectivly. A Infinity Q45 weighs 4250lbs.
Weight of our Bonne'* depends on the model year and options. Mine weighs in at a hefty 3800 lbs with a full tank (150 lbs) of fuel. Load it up, as it normally is, with 4 passengers and a bit in the trunk and it tips the scales at 4,500 lbs.
Power to weight ratio defines how quickly it will accelerate but I agree that it'* torque that pulls you up to speed and the 280 ft-lbs is a little under rated.