Often heard that short trips are hard on the car, and long trips especially at highway speeds are easy. My car is mostly city driven, with 4 x 2mile trips daily, this fits into the short trip category and can be considered severe service. Hypothetically the trips can be made "less hard", or easy, by driving extra 5miles, or even better, taking it to the highway for extra 50miles. By now we should see the flaw in the logic. I am trying to answer these questions: - Is it worthwhile to lengthen the trip to get it to optimal operating condition? - What's the sweet spot? Battery will be more fully charged and can last longer. What other components are better off? - Battery: better - Starter: no change - Engine oil, other fluids: maybe - Alternator: worse, more wear - Brake: worse, more wear - Tire: worse, more wear - Gas: worse, more consumption - Insurance: worse, higher chance of accident - Time: worse, more time - Environment: worse, more pollution - Other people: worse, more congestion - ?