US Postal Service interview questions

Wasn't even an interview, at least in the traditional sense. I went in, I was explained what the job was and asked if I was willing to do it. I said yes, and that was it, I was sent out the door and told to wait for an email about a drug test. The position didn't sound that bad but I was told that if a post office in another state needs coverage I would need to drive my personal vehicle an hour out of the way to cover whenever they needed, and apparently this happens often? I wasn't okay with hearing this, but I was still willing to do the job. Anyway, I was unemployed at the time and desperate for a job, I'm interviewing at other places in the meantime. Two weeks go by, still no email from USPS about a drug test and I accepted a job somewhere else. Another two weeks go by and I finally get an email offering me the position and get paperwork for a drug test. It was way too late by that point, to send me a drug test a whole month after interviewing is absurd.