Table schema:
CREATE TABLE table_name_84 (year INTEGER, entrant VARCHAR, points VARCHAR, chassis VARCHAR)

Question: What is the latest year with less than 2 points, a Mclaren m28 chassis and an Entrant of löwenbräu team mclaren?
SQL: SELECT MAX(year) FROM table_name_84 WHERE points < 2 AND chassis = "mclaren m28" AND entrant = "löwenbräu team mclaren"