Based on the statements of the drivers and the evidence it is more likely than not the following events occurred: 

DR 2 and P1 on V2 were switching drivers. When they were switching P1 on V1 told D1 "it would be funny if they splashed them". 

D1 told him she did not know how to splash them. P1 told D1 to drive towards them and then turn sharply. D1 started to drive towards them and then P1 put V1 into sports mode and D1 lost control of the V1. V1 then t-bone collided with V2. 

When the collision occurred both occupants of V2 were injured. DR2 sustained a concussion and a broken right thumb. P1 ofV2 sustained a fractured tibia. 

Both occupants of V2 were transported to Kootenai Health for their injuries and Deputy took the initial report and pictures.
COEUR D'ALENE LAKE
COEUR D'ALENE                 