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(KSL News) -- A motorhome fire snarled traffic on I-15 near 400 South for several hours this afternoon.
A mattress that flew off a truck is being blamed for starting the blaze. The driver of the motorhome ran over the mattress, and police think heat from the engine sparked the fire.
Within minutes the motorhome was engulfed in flames. Fortunately the elderly couple inside was able to get out safe, but their home is destroyed.