Some more education for you - not your specific 280 though:
The calculated maximum acceleration speed vs. time for a 100hp U.S. passenger car - not your specific car. It includes air drag and tire rolling resistance, the two biggest power losses. The air drag force is proportional to velocity squared, while the tire rolling resistance force is a constant.
M=1500 Kg
Frontal area = 3 m2
Air density = 1.2 Kg/m3
Air drag coefficient Cp = 0.32
Tire rolling resistance coefficient = 0.01
Horsepower (traction at axle) = 100 HP, (watts = 74,600)

Net power (HP) = traction power – air drag power – tire rolling resistance power

The acceleration rate = net power /(M•v)

At 30 mph, air drag power = 1,388 watts, tire rolling resistance power = 1,972 watts, net HP = 71,240 watts (95.5 HP), acceleration = 3.54 m/s2, elapsed time = 1.94 s.

At 60 mph; air drag power = 11,107 watts, tire rolling resistance power = 3,946 watts , net HP = 59550 watts (79.8 HP), acceleration = 1.48 m/s2, elapsed time = 8.10 s.

At 90 mph; air drag power = 37,490 watts, tire rolling resistance power = 5,920 watts, net HP (watts) = 31,190 watts (41.8 HP), acceleration = 0.52 m/s2, elapsed time = 23.20 s.

Note that at 90 mph, over half the traction HP is being lost in air drag and tire rolling resistance.