Postmates CEO: The food delivery space is not a winner-take-all market

The delivery wars are heating up with Grubhub and Uber having already hit the public markets and now Postmates might not be far behind. The food delivery unicorn filed for its IPO confidentially in February and closed an additional $225 million raise in September, bringing Postmates' valuation up to $2.4 billion. Bastian Lehmann, co-founder and CEO of Postmates, joins "Squawk Box" to discuss.