Celebrity chefs are putting their culinary spin on a classic American favorite - the humble hot dog. In a bid to elevate the humble street food, these culinary heavyweights are introducing gourmet twists, from artisanal toppings to gourmet condiments. From truffle-infused ketchup to lobster-topped dogs, these upscale hot dogs are redefining the way we think about this summertime staple. But are these fancy frankfurters worth the hefty price tag?