5465
He was generally light-hearted and was generally , at least until his 1960 crash at the Bonneville Salt Flats , optimistic in his outlook .
 Bonneville Salt Flats
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Bonneville Salt Flats