When driving you are in control of the vehicle and make the choices for your actions. It is worth remembering that as the roads are quieter, you will receive less feedback from other drivers, and you may feel less at risk with the relative lack of traffic.
The hire vehicle may be bigger or more powerful than any you are used to and this may change your perception of speed. In some cases, the warning offered by a vehicle speed warning system (VSWS) will not be present and you can become unconsciously complacent.
Focus on the task at hand (driving) and do not become distracted by COVID-19 concerns which could to affect your personal safety and that of others.
Think through possible consequences and remind yourself of all the above considerations before setting off.