Constant ATTRIBUTION 

pub const ATTRIBUTION: &str = "Motor stock data from motor.fusionspace.co, licensed CC BY 4.0 \
                               (https://creativecommons.org/licenses/by/4.0/); aggregated from \
                               public vendor listings and ThrustCurve.org; provided as is, with \
                               no warranty: check stock and price on the vendor's own page \
                               before relying on them";

The credit the API’s data license asks for, in its words (“Motor stock data from motor.fusionspace.co”), with the license, CC BY 4.0, and the API’s caution about stock and price.