1. **State the problem:** We need to find how much heavier the Tesla Roadster is on Earth compared to Mars, given its weight on Earth in pounds and its weight on Mars in kilograms. 2. **Convert the weight on Earth from pounds to kilograms:** The conversion factor is $1 \text{ lb} = 0.453592 \text{ kg}$. $$2877 \text{ lbs} \times 0.453592 = 1305.99 \text{ kg}$$ 3. **Calculate the difference in weight between Earth and Mars:** Weight on Earth in kg is approximately $1305.99$ kg. Weight on Mars is $495$ kg. Difference: $$1305.99 - 495 = 810.99 \text{ kg}$$ 4. **Round the answer to the nearest hundredth:** The difference is $810.99$ kg. **Final answer:** The Tesla Roadster is approximately $810.99$ kilograms heavier on Earth than on Mars.