Two persons were killed on the spot when the car in which they were travelling in rammed into a mango-laden truck at Arempula village on Khammam-Warangal highway on Saturday. Sources said that D. Mahipal Reddy, (32), a Hyderabad-based businessman, and R. Venkatesham, (35), of Nalgonda district, died instantly after their car collided head on with a truck carrying a consignment of mangoes on the outskirts of Arempula village.