MDA is a man-made (synthetic) recreational drug noted for its stimulant and psychedelic properties that has been used since the 1960s as a clubbing and sex-enhancing substance, with some similarities to LSD and MDMA (ecstasy). Sought after effects. 1  visual hallucinations.
A wheel alignment is done to make sure the vehicle's wheels are running parallel to each other, and that the tires meet the road at a correct angle, to fix or avoid problems such as irregular tire wear, poor handling (pulling to one side) or a crooked steering wheel.
Alignment is basically the adjustment of the tire's position vertically from the front and side, and compares position parallel wise (toe in) and forward. How long it lasts is relative to how much driving you do and what happens to the car, say when you hit a pot hole, and such. If you hit something (pothole, curb ect.) it is a good idea to check alignment.