Most people would not be pleased if their friend borrowed their car and then damaged it in some way and so the speaker is using sarcasm to convey that they are not happy at all.
Consider the staetement "My friend used my car all day today and didnt even put any gas in it.". Based on this statement, is "Pleased with how my friend borrowed my car and totally drained the gas tank without even putting any gas in it" a true statement? Yes/no/unknown