The use case: how Speedway Motors deploys Harness
Speedway Motors uses Harness Feature Management & Experimentation to roll out new features gradually to small groups of customers, toggle them off quickly if problems appear, and run controlled experiments on things like search ranking and product-page recommendations.
More reported results
Figures published in Harness’s case study. They are not independently measured by usedby.
Rollback time: from hours → 20 seconds
+4 % increase in total orders placed after product-page redesign
Prevented a 2.5 % drop in order volume by disproving a faulty upsell hypothesis
In the customer’s words
Harness has become a key part of our overall strategy,” said Boellstorff. “It increases the velocity of experimentation, strengthens our culture of safety, and helps us deliver better customer experiences every day.Other AI tools used by Speedway Motors
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Based on Harness’s published case study. We check the public evidence; the results are reported by the vendor.
harness.io- Source published
- Aug 28, 2026
- Last checked
- Nov 11, 2026
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- The figure: 30%Checked
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- Speedway Motors uses HarnessChecked
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With Harness FME, teams can now roll out new features to a small subset of customers—1%, then 5%, 10%, 20%—and monitor for errors or performance changes. If a problem arises, they can toggle a feature off in seconds, protecting 99 percent of customers from any impact.