A literal match uses an exact string as a regular expression. In PowerShell, matching is case-insensitive by default, so Car matches CAR, car, Car, and CaR. section 21.2
Matching an exact word
Use Car when you want to find that character sequence rather than describe a variable pattern. Regex characters such as word markers, character sets, periods, and repetition operators extend matching beyond literals. section 21.2
