San Luis Potosí → Guanajuato · Autopista 57D México-San Luis Potosí
Punching Irapuato, Guanajuato, into the GPS for the trip back from San Luis Potosí, San Luis Potosí, the dashboard once again shows the 211 km (131 miles) separating the two cities along Autopista 57D México-San Luis Potosí and estimates 2h 21m to wrap up the return. San Luis Potosí, the capital potosina y nodo logístico que conecta el Bajío con el norte del país, fades in the rear window while the vehicle picks up the homeward path toward Irapuato, the capital fresera y nodo logístico intermedio del corredor del Bajío. Unlike the outbound leg, it pays to walk around the truck before pulling out — fuel level, tire pressure, dashboard alerts and load straps all deserve a fresh look, because there is less slack to absorb a surprise once fatigue has settled in. Topping off the tank costs roughly MXN 425.92 to cover the same 17.6 liters (4.6 gallons) consumed on the way out. The return reimbursement reaches MXN 1371.50 at the MXN 6.50/km benchmark. Before pulling into the driveway, close out the Clara receipt with the final odometer reading: corporate finance accepts the digital file with no wet-ink signature required. For the Canadian professional driving the 211 km between San Luis Potosí and Irapuato, reimbursement of MXN 1371.50 stays excluded from T4 employment income provided the per-kilometre rate matches the CRA's reasonable allowance benchmark for the province. Canadian employers typically reimburse at the CRA reasonable per-kilometre rate (61¢ for the first 5,000 km in 2024) so the payment is excluded from T4 employment income. Keep the GST/HST-compliant fuel receipt from any NRCan-tracked retail network station used during the trip — Canada Revenue Agency (CRA) auditors regularly verify fuel-receipt GST/HST when reviewing T2200 declarations of conditions of employment. The San Luis Potosí→Irapuato mileage must be logged with date, business purpose, opening and closing odometer readings inside the corporate expense system before month-end close to remain deductible.