@PCX
That's simply not a feature in firmware of 37x0 series. It's unlikely that Garmin will add it in any further firmware updates as it's a long discontinued model. When 37x0 was discontinued, the same hardware was initially used for 34x0 which has a more developed firmware than 37x0 however still not supporting 'driving on' road ID feature. It's entirely possible to convert 37x0 to 34x0 because of the hardware similarity but be aware that some 37x0 running 34x0 firmware had reportedly poorer satellite accuracy than others due to having less compatible GPS chips:
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