Okay, so you've designed it. Now, make sure it works with the dirty electrical signal of a typical car's power bus. Then make sure it fits in the space requirem

Okay, so you've designed it. Now, make sure it works with the dirty electrical signal of a typical car's power bus. Then make sure it fits in the space requirements of under the car's hood, or in the door, or any of the other tight places that these embedded systems go. Then make sure that it's verified to act over several years of vehicle life. Then, make sure your suppliers will guarantee you that they won't discontinue the part for at least 10-15 years because of legal requirements for spare parts. Just throwing discrete logic at the problem doesn't always help.