it might seem like 16000 seconds is a lot to erase, but remember every uncompleted level = 999 seconds... so it's really not that tricky to complete the second medium badge... definitely doable :)
Using Radius' tips I got 1176 ft!! Here they are:
1082 feet - here's how I did it: Day 1 - Start with full fuel, the $500 wheels, $3000 transmittion, $150 engine, and buy the boost. Tilt your car back when you're running over the zombies to maintain a bit of speed. When you get to the part where there's a gap you jump that you'll usually lose speed, hit your boost. I generally get around $7500 the first day. Day 2 - Buy the big engine and the gun. Spend as much money as you can upgrading the gun. If you have any extra, buy another level of boost. On my best try, I ran into the boxes on day 2. You should get anywhere between 11 and 15k on the second day. Remember to tilt your car back slightly when running over zombies. Day 3 - Upgrade your boost to full. Upgrade your gun with whatever remains. Don't use any boost until you get to the last hill, and then use it all. You should fly way up in the air and sail into the top of the boxes and through them. Good luck!
Have just read the new updates... I feel cheated. If I managed to complete with harder 16-18 and last place = failed missions, anybody can. Really. Anybody.
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