Express Auto Spa is located right downtown in Waukesha at the busy corner of NW Barstow Street and St. Paul Avenue. This is a full-service car wash with many options to choose from and adequate staffing to ensure the accommodation of all who go through, making sure it's completed in a timely manner. The staff uses a soft-touch wash and clean. Inquire about the monthly deal available to customers. It's a set fee, starting as low as $15 per month for unlimited washes.