Please choose the correct ending to complete the given sentence: Cars & Other Vehicles: [header] How to choose a car tracking system [title] Establish the purpose of your tracking system. [step] What you use the tracking system for will help you decide what features you'll want. Is this system to monitor teens using the family car? Do you want your tracking system for theft protection? Would you like to keep close tabs on the company car? Certain tracking systems will help you more than others, depending on your needs.

Ending1: [substeps] Be ethical with your car tracking usage. Using a car tracker without the driver's consent can be an invasion of privacy. Ending2: [title] Determine which trackers will let you change your user name manually. [step] Your utility will show you where you can access the system, giving you user name and reported identifier labels. Ending3: [title] This article is about basic tracking systems. [step] You may need something between 20-70 flash drives. Ending4: [substeps] Know what services your service provider is providing and ensure you're up to date with these providers. Spend some time researching your company to determine what services they offer and can provide.

Answer format: ending1/ending2/ending3/ending4