Since I have no background knowledge on what this person's occupation is, I think it's at least plausible. For example, if you drive a really beat up car, and

Since I have no background knowledge on what this person's occupation is, I think it's at least plausible. For example, if you drive a really beat up car, and park it every day in front of your place of business, then it might actually reflect negatively on the business. People might see it and think "I wanted to go somewhere professional, why is this rusty junk here?". Now, if your business doesn't deal with clients or customers, then the argument of impressing people goes away, but without more information it's impossible to say whether it's reasonable or unreasonable.