Even with no traffic, it would have been impossible for the aide to catch up with Biden as he toured Delaware, meaning he would have been unable to launch a counterstrike in the event of a nuclear attack by Russia, China, or North Korea.

Source: https://www.dailymail.co.uk/news/article-11642027/VP-Biden-insisted-nuclear-football-remain-motorcade-preserve-regular-Joe-image.html?ns_mchannel=rss&ns_campaign=1490&ito=1490

North Korean leader Kim Jong Un oversaw a nuclear counterstrike drill involving a missile with a mock atomic warhead capable of reaching Japan’s west coast, its official media said.

Source: https://www.japantimes.co.jp/news/2023/03/20/asia-pacific/kim-calls-for-nuclear-attack-readiness/