A car engine whose output power is $145$ hp operates at about $14\%$ efficiency. Assume the engine's water temperature of $85$C is its cold$-$temperature $($exhaust$)$ reservoir and $455$C is its thermal "intake" temperature $($the temperature of the exploding gas$-$air mixture$).$ What is the ratio of its efficiency relative to its maximum possible $($Carnot$)$ efficiency? Estimate how much power $($in watts$)$ goes into moving the car. Estimate how much heat, in joules, is exhausted to the air in $1\mathrm{.}0$ h$.$