let me tell you what ACTUALLY killed them
1 - Toyota Yaris is the cheapest car in America. probably doesn't have the best handling in the wet.
2 - Not wearing seatbelts / Not using Child Seat - young people in general do not understand safety.
3 - no Guard Rail in place to prevent the car from hitting trees. Trees are Death Traps for cars - Guard Rails are the solution - hence why we don't use them so we can use the deaths to whine about speeding and use it as excuse to have speed limits and charge people speeding tickets, making money for the state.