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Courtesy of Waymo

Waymo, Alphabet's self-driving car unit, on Monday debuted a public education campaign about self-driving cars and their benefits — "Let's Talk Self-Driving." The company teamed up with Mothers Against Drunk Driving, the National Safety Council, the Foundation for Blind Children, the East Valley Partnership, and the Foundation for Senior Living.

Why it matters: When companies share timelines for when their self-driving cars will arrive, they're actually speaking about when the technology will be ready. But social acceptance is a big factor that will determine how quickly the self-driving car future arrives. Waymo has ambitions to roll out its ride-hailing services beyond its current small test in Arizona, so is trying to help consumers get ready.

Key quote: "When 94% of road crashes today involve human error, self-driving cars promise a future where anyone can ride with a driver that never gets drunk, tired, or distracted," Waymo chief John Krafchik wrote in a blog post. (A previous Axios analysis of self-driving car accidents shows similar findings.)

Go deeper

Read: Former Vice President Walter Mondale's last message

Photo courtesy of Mondale.

Former Vice President Walter Mondale wrote a farewell letter to his staff, sent upon his death on Monday, thanking them for years working together.

Dear Team,

Well my time has come. I am eager to rejoin Joan and Eleanor. Before I Go I wanted to let you know how much you mean to me. Never has a public servant had a better group of people working at their side!

Together we have accomplished so much and I know you will keep up the good fight.

Joe in the White House certainly helps.

I always knew it would be okay if I arrived some place and was greeted by one of you!

My best to all of you!

Fritz

Former Vice President Walter Mondale dies at 93

Walter Mondale, left, with former President Jimmy Carter in Jan. 2018 at the McNamara Alumni Center on the University of Minnesota's campus in Minneapolis. Photo: Anthony Souffle/Star Tribune via Getty Images

Walter Mondale, who transformed the role of U.S. vice president while serving under Jimmy Carter and was the Democratic nominee for president in 1984, died Monday at 93, according to a family spokesperson.

The big picture: President Biden, who was mentored by Mondale through the years, said in 2015 that the former vice president gave him a "roadmap" to successfully take on the job.

Scoop: U.S. ambassador refuses Kremlin push to leave Russia

U.S. Ambassador to Russia John Sullivan. Photo: Anton Novoderezhkin/TASS via Getty Images

The United States ambassador to Russia is refusing to leave the country after the Kremlin "advised" him to return home following new Biden administration sanctions, two sources briefed on the situation tell Axios.

Why it matters: John Sullivan, a respected diplomat who President Biden has, so far, retained from the Trump era, is at the center of one of the most important early tests of Biden's resolve.