Driver – San Francisco: Hey Big Spender!
Spend 5,000,000 WP. Rather than spending money buying cars, use your funds to upgrade your multiplier and complete dares. This makes more sense since an upgraded multiplier boosts to 1.5 then to 3 then to 10. This increases your income for every 20 minutes that passes. To unlock the second and third upgrades you have to complete an added 20 dares for each increase. These aren’t difficult to complete with the car you have since you can shift. Some dares also require you to shift to complete the dare. By finishing dares successfully and doing activities on your near the end of the story, you can easily get this Achievement.