rage
Around the RAGE world map I found various authority drones. It seems that jump onto them with my car triggers some message and I imagine that there is a price if I get them all.
Unfortunately there are some drones that I was not able to reach. Maybe it depends on car or maybe I choose wrong jump platforms, I don't know.
Is there a guide that can help me do destroy all drones?
Not including the races from Slim, You can race Starky, who is apparently the top racer in town. He can be found standing around near Slim. Racing him and winning will give you an upgrade for your car.
Starky became available to me to race after completing all the Slim races. I completed them all in first place, but do not know if this is a prerequisite to getting access to the Starky race. I didn't actually check if he was available at some point sooner.
Updated*
Including all the races in the three events, there are no more races in Wellspring available. In total, 16 races are available in Wellspring. You can do 11 more races and if you win all of them, you will earn the Rage Cup Achievement/Trophy.
You can see your exact HP, in the statistic screen, under details. This can be accessed by pressing TAB, and pressing the tab the furthest to the right.
However, in the heat of battle it's a lot easier using the visual indicator, instead of going into the menu.
As you can see from the image below, the indicator shows that I'm very close to death. After a bit of testing, I've got around 10-15% HP left. So the wider circle of red, the less HP you have.
Best Answer
There are a few helpful guides found on TrueAchievements.com for RAGE's Jumper achievement.
For most of them, you just need to take your car and zip up a ramp at near full speed to hit them. Only 2 or 3 are really challenging.