DM17 Roadside Detritus - The Bonus Mystery Cache

There is nothing at the headline coordinates, so please do not look there! To find this cache you will need to answer a few questions.
 

The cache can be found at N 50 A.B W 003 C.D, substitute the answers to the following in to the coordinates.

1. Since I last filled the tank on my car I have driven 352 miles. I know that my car returns 40 miles to the gallon. How many litres of fuel would I need to add to refill the tank. Your answer to the nearest litre is A.
2. When I visited the United States I hired a classic car to travel along route 66. The engine was enormous, 8013cc to be precise. What displacement is this in cubic inches? Your answer to the nearest whole number is B.
3. A friend of mine recently visited Pakistan and was surprised at how few cars there were on the roads. I did a little research and discovered that the UK had 519 vehicles per 1000 inhabitants in 2010. In the same year how many vehicles were there on Pakistani roads per 1000 inhabitants? Your answer will give you C.
4. I am fortunate enough to have a long driveway on the approach to my house. In fact it is 298 metres long. I asked a contractor for a quote to resurface the drive and being an old fashioned sort he asked how long it was in feet? Your answer (rounded down to the nearest whole number) will give you D.

You can check your answers for this puzzle on GeoChecker.com.