Hi @Danilik and welcome to the forum and to TrustedHousesitters. You may notice that in my original post I didn’t suggest that owners offer their car to sitters. I didn’t intend that to be the point of this post. Rather, I suggested for homeowners to think outside the box - is a car preferable or essential? A big difference. I then suggested ways that may make it so that a sitter could do the sit without the use of a vehicle. My opinion about this topic is irrelevant as each member has to decide based on their personal situation and preferences.
A homeowner should look at the ‘what ifs’ when considering offering the use of their vehicle. If you search the forum posts using the spyglass you’ll see there are a few posts about this topic. Perhaps take a look at Cars for sitters
Although forum members are helpful, you should get specific advice from your insurance agent as each policy is different.