How a Denver tunnel operator turned the kiosk into a member machine

An illustrative case study based on a typical mid-size express tunnel deployment. Names and identifying details have been anonymized; results are consistent with what we see across operators who install the snapshot fully.

The setup

• Format: Two express tunnel sites, 4 lanes each, ~22,000 washes/month combined
• Pre-install membership rate: 22% of customers
• Tech stack: Sonny’s SiteWatch tunnel controllers, Stripe processing, manual Mailchimp membership emails
• Primary pain points: Staff forgetting to prompt membership at the pay station, silent card-failure churn, no weather-driven marketing

The install

GHL Car Wash Snapshot installed on a Tuesday, live by Wednesday afternoon. During the 30 hours of dedicated support:

• Configured 3-tier membership ladder ($19.99 / $29.99 / $39.99)
• Designed kiosk QR signage and printed it for all 8 pay stations
• Wrote a 1-line staff script: “By the way, that wash would’ve been free with our $19.99 club — want to sign up in 30 seconds?”
• Wired Sonny’s SiteWatch webhook into the GHL member ledger
• Connected free OpenWeather feed for the 80201 ZIP

Week 1 results

By end of week 1, member conversion at the pay station had moved from 22% to 29%. Staff stopped having to remember — the QR signage and the post-payment SMS did the asking.

Week 4–8 · The dunning sequence proves itself

Pre-install, this operator was losing about 4% of members per month to silent card failures. The 3-touch dunning sequence moved that to under 1% net churn from failed cards alone — recovering roughly $1,200/month of MRR that was previously walking out the door.

Week 8–12 · Weather promos go live

The first sunny-Saturday surge promo fired on a clear-forecast Friday in week 9. Saturday lane volume that weekend was 14% above the trailing 4-Saturday average. Subsequent surge promos showed consistent 10-16% weekend lifts.

Where they are at 90 days

• 39% member conversion (up from 22%)
• ~$8,400/month of recovered + incremental MRR
• 11 Google reviews/month average (up from 2)
• First fleet account closed in week 12 (a 14-vehicle landscaping company, ~$1,100/month)

This is what the snapshot looks like when an operator installs it fully and follows through. If you want to see it live, book a free demo or get the snapshot for $997.