Q$-2)(25$P$)$ A $8\mathrm{.}5kN$ car is traveling at sea level at a constant speed. Its engine is running at $4500re\frac{v}{m}in$ and is producing $250N-m$ of torque. It has a driveline efficiency of $90\%,$ a driveline slippage of $2\%,380-$ mm$-$radius wheels, and an overall gear reduction ratio of $3$ to $1.$ If the car's frontal area is $2\mathrm{.}2m^2,$ what is its drag coefficient?