Carr began his hike from Homewood, Alabama, to the town of Pelham, Alabama, at midnight.
The night before Carr was set to begin his new job at Bellhops Moving, his auto broke down.
The customer, Jenny Lamey, was so touched by Carr's story she made a decision to launch a GoFundMe account to help him purchase a new vehicle.
No longer: Carr was rewarded with his boss' vehicle after making a lasting impression on his first clients.
Here's what you need to know.
On the night before he would begin a new job at Bellhops moving company, the college student's 2003 Nissan Altima unexpectedly broke down. But the night before Carr's first day on the job, his auto - a 2003 Nissan Altima - broke down.
According to Lamey, Carr was reluctant to share the story with his co-workers but when they found out, they were equally impressed.
Carr has gotten a lot of attention in the past few days for his nearly 20-mile trek. He estimated that it would take seven hours, and he threw in an extra hour in case he needed time to rest. Around 4 a.m. he reached Pelham, but he still had hours more to walk to get to the house. He and his partners were concerned for his welfare and stopped to check on him.
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Officers Carl Perkinson and Klint Rhodes pulled up shortly after, the Pelham police added, and all three officers took the young man to breakfast.
Knighten and officers Klint Rhodes and Carl Perkinson then took Carr to a church so he could be in a safe place before it was time to go to work, according to the Atlanta Journal-Constitution. Carr said once the officer told Lamey and her husband Chris his story, they insisted he rest for a while. Carr reacted to the surprise with shock and awe.
After the move, Jenny shared the story on Facebook. She shared the story on Facebook and set up a GoFundMe to raise money for Walter to fix his auto. He said he had lost the home he shared with his mother in New Orleans to Hurricane Katrina.
After the emotional day, Lamey wrote in another post on Facebook that she considers Carr a role model of how to overcome hard days. They went to Whataburger with some other officers, and Carr ordered a chicken biscuit.
"He was like, 'Where are you going?' and I was like, 'It's hard to believe, it's going to sound real insane, but I'm actually headed to work.'" Carr said. "We were happy to be able to say thank you in a way that was meaningful to him..." "I'm the CEO, and I pride myself in setting the bar for the company, on how much passion we have for what we do".
Carr told local media that he eventually wants to join the Marines.
Mr Carr plans to graduate from college in December with a degree in health sciences.