My wife came home from shopping and told me her oil light came on. We immediately checked oil which was fine and very clean. It had been changed last month. I started the car with ease. No oil light. An hour later I drove her car a few miles on an errand. I wanted to see if the light would come on. It came on after about 3 miles into my drive. I made my destination turned the engine off and did my errand. Ten minutes later I started the car back up with ease with no oil light and no engine noise. I started home and after about 1 mile into my drive the oil light came on. I then made a left turn and the car just stopped. All the dash lights came on and I had to pull over and get towed. Car wouldn't start. Starter and battery tested ok but our mechanic cant turn the engine with a wrench. Can the engine or oil pump seize or fail that quickly without notice? Before getting a new engine what should we have them check? Wouldn't start even with a jumbo battery charger.