The answer to your question would be that the complete adjective clause for this sentence is "I drive". In this case, the relative or adjective clause is just the words "I drive", but the word "that/which" is implied. Therefore, this is an elliptical. The technical name for a missing relative pronoun is an <em>elliptical relative pronoun. </em>
Hello friend i'm giving you this blood for you because you have always been there for me and this is how i shall pay you back and i want the good karma <3