A single car crash in Potter County killed a passenger, injured the driver. It happened around 7:30 Sunday night in the 4300 block of North Side Drive, just north of Amarillo. 64-year-old Soukahn Mounivang of Amarillo was traveling northbound on North Side Drive at what was determined to be an unsafe speed when he failed to negotiate a curve and lost control of of his 2004 Infinity G35.