Amazon ($AMZN@US) gave away cars and $100,000 cash bonuses to selected warehouse workers as part of its running sweepstakes to encourage employees to get vaccinated. Four warehouse workers and a Whole Foods employee were awarded cars worth as much as $40,000 after they provided proof of Covid-19 vaccination. And last week, three warehouse and Whole Foods employees were given $100,000 cash awards for getting vaccinated. Amazon launched the Max Your Vax reward sweepstakes in August. It offers employees the chance to win cars, a week of paid time off with a $12,000 vacation package, and the cash awards worth $100,000 and $500,000. A total of 18 prizes worth nearly $2 million will be awarded through October 21. To participate, employees provided proof they are fully vaccinated via an internal website.